06853150 is referenced by 181 patents and cites 20 patents.

A LED driver includes a high frequency inverter and an impedance circuit. The high frequency inverter operates to produce a high frequency voltage source whereby the impedance circuit directs a flow of alternating current through a LED array including one or more anti-parallel LED pairs, one or more anti-parallel LED strings, and/or one or more anti-parallel LED matrixes. A transistor can be employed to divert the flow of the alternating current from the LED array, or to vary the flow of the alternating current through LED array.

Title
Light emitting diode driver
Application Number
10/37490
Publication Number
6853150 (B2)
Application Date
December 28, 2001
Publication Date
February 8, 2005
Inventor
Robert A Erhardt
Schaumburg
IL, US
Bernd Clauberg
Schaumburg
IL, US
Assignee
Koninklijke Philips Electronics
NL
IPC
H05B 037/02
H05B 037/00
G09G 003/36
G01R 019/15
H05B 043/00
H01L 033/00
H01L 033/00
H05B 033/08
H05B 037/02
H01B 037/02
H01B 037/00
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